Gaseous fuel



UNITE-ESTATES PATENT OFFICE.

JAMES R. ROSE, OF EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, F LAKEWOOD, OHIO, ASSIGNIORS TO CARBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A CQRIQRATION OF DELAWARE.

GASEOUS FUEL. I

No Drawing.

i more particularly to a fuel which is especially adapted for the purpose of cutting metals with great rapidity, where extreme cleanness of cutting is not essential. A use for which our gas is particularly well suited is for cutting scrap iron.

We obtain a gas having the above desirable characteristics by mixing with hydrogen, as a combustible base, butane an carbon monoxide in the proportions of from 23% to 125% by volume each of such butane and carbon monoxide to the hydrogen constituent. The carbon monoxide serves to increase slightly the temperature produced by the combustion of hydrogen alone. thermore, the gaseous mixture produces within the burning hydrogen a visible cone which enables the operator to adjust the proportions of the gases and the combustion-supporting oxygen as may be necessary and to apply the flame in the most advantageous manner-to the work. Both the volume of the flame and the heat units produced by the combustion of the mixture are greater than are produced by the combustion of hydrogen alone but are lower than usually required for operating on heavy masses of metal and for cutting cast iron and steel and corroded, dirty and slaggy iron and steel. However, our gaseous mixture is capable of Specification ofLetters Patent.

Patented J an. 24,. 1922;

Application filed December 26, 1919. Serial-No. 347,451.

cutting 'with much greater rapidity than can be accomplished by gases having such higher carbon content.

According to Richards on Metallurgical Calculations, published in 1908, the flame temperature. produced by the combustion of the aforesaid gases will be above 3200 C., and the variations in the percentages of the said gases will cause approximately the fol lowing variations in the net B. T. U. per cubic foot of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 23 each of butane and carbon monoxide; net B. T. U.s 368: cu. ft. of oxygen .650.

No. 2 mixture, 75% H. with 12.1 each of butane and carbon monoxide; net B. T. U.s 659; cu. ft. of oxygen 1.250.

Having thus-described our invention what we claim is r 1. Agas for cutting, welding and heating purposes consisting of a mixture of carbon monoxide and butane with hydrogen in the proportions of from 21} to 12}-'/0 by volume each of carbon monoxide and butane to hydrogen. I

2. A gas for cutting, welding and heating purposes consisting of a mixture of butane and carbon monoxide with hydrogen in proportions not substantially less than 5% by volume of such combined gases to the hy drogen and not materially more than 25% of such combined gases to the hydrogen, the butane and carbon monoxide being present in the proportions of at least 29 each in such mixture. i

In testimony whereof, we hereunto afiix our signatures.

JAMES R. ROSE. I JOHN HARRIS. 

